Aw mama, ang pusod ng baby ay dapat completely healed na by 4 months so definitely better to have your pedia check it out, especially if it looks inflamed or has that red appearance, some babies take a bit longer to fully heal pero better safe than sorry, di ba? I had a friend whose LO's umbilical area looked weird din around that age and turned out it was just a little residual irritation from the cord area, but the doctor gave her peace of mind in one visit lang, so go na with your doc para matulog ka ng mahimbing at walang alalahanin sa gabi!